Hey everyone, my name is Paul. I bought a 80cc/66cc 2 stroke motor kit off ebay. I am going to attempt to put it on a old "Sears & Roebuck Inc" single speed bicycle. I believe it's from the mid 70's because of the "BMA" decal painted on it. I picked the bike up for $10, I figured it was a good project. It has an odd ball size for the rims, 1 3/8 x 26, which is bigger than the modern 26. My main concern with finding a bike was it had to be a older steel bike. Now that I have almost everything I have some ?'s that I'm hoping to get some help. It comes with a 40t sprocket, I want to change it out with a 27-32t sprocket. Will this help me out and how much? I'm looking to make it a little faster.I seen some racing sprockets on ebay that are made out of heat treated alum, anyone have some feedback on these? Will they hold up like cro-mo steel sprocket? Has anyone heard of "boygofast" on ebay? Thats where i got my kit, I was wondering if the "CNS" carb will fit all 2 stroke Chinese engines? I'm going to port & polish the intake and exhaust and put on a performance muffler with a chamber. Any help will be greatly appreciated, Thanks for stopping by 
